/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 *
 * @format
 */

"use strict";
function _asyncToGenerator(fn) {
  return function() {
    var gen = fn.apply(this, arguments);
    return new Promise(function(resolve, reject) {
      function step(key, arg) {
        try {
          var info = gen[key](arg);
          var value = info.value;
        } catch (error) {
          reject(error);
          return;
        }
        if (info.done) {
          resolve(value);
        } else {
          return Promise.resolve(value).then(
            function(value) {
              step("next", value);
            },
            function(err) {
              step("throw", err);
            }
          );
        }
      }
      return step("next");
    });
  };
}

const DependencyGraph = require("./node-haste/DependencyGraph");
const Transformer = require("./DeltaBundler/Transformer");

class Bundler {
  constructor(config) {
    this._depGraphPromise = DependencyGraph.load(config);

    this._depGraphPromise.then(dependencyGraph => {
      this._transformer = new Transformer(
        config,
        dependencyGraph.getSha1.bind(dependencyGraph)
      );
    });
  }

  end() {
    var _this = this;
    return _asyncToGenerator(function*() {
      const dependencyGraph = yield _this._depGraphPromise;

      _this._transformer.end();
      dependencyGraph.getWatcher().end();
    })();
  }

  getDependencyGraph() {
    return this._depGraphPromise;
  }

  transformFile(filePath, transformOptions) {
    var _this2 = this;
    return _asyncToGenerator(function*() {
      // We need to be sure that the DependencyGraph has been initialized.
      // TODO: Remove this ugly hack!
      yield _this2._depGraphPromise;

      return _this2._transformer.transformFile(filePath, transformOptions);
    })();
  }
}

module.exports = Bundler;
